1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dima020 [189]
3 years ago
7

How many atoms of Pb are there?

Chemistry
2 answers:
natta225 [31]3 years ago
5 0

Answer:

82, I believe.

Explanation:

Helen [10]3 years ago
3 0

Answer:

56

Explanation:

You might be interested in
Be sure to answer all parts. Write a balanced equation (including physical states) for the following reaction: Sodium carbonate,
aalyn [17]

Answer:

I think it would be:

NaCO3 (s)-->Na2O (s) + CO2 (g)

3 0
3 years ago
If 0.959J of heat is added to 0.88g of water, how much will its temperature increase
ss7ja [257]

Answer:

0.260 Celsius

Explanation:

q =c x m x (T2-T1)

c - specific heat of water 4.186 J/g.C

T2-T1 = q /(c x m) = 0.959 /(4.186 x 0.88) = 0.959/3.68 =0.260 C

7 0
2 years ago
Nitrogen dioxide is one of the many oxides of nitrogen (often collectively called "") that are of interest to atmospheric chemis
Lubov Fominskaja [6]

Answer:

Explanation:

idek

6 0
3 years ago
An atom is neutral. Its nucleus contains two protons and two neutrons. How
garri49 [273]

Answer:

we need to know which atom you're talking about and then you need to say what the mass number is then we can tell how many electrons there are.

(I think)

3 0
2 years ago
Read 2 more answers
8. How does the arctic fox survive the harsh winters in the tundra?
Ket [755]

Answer:

the answer is d

Explanation:

It migrates to coastal areas during the winter months to catch fish.

4 0
2 years ago
Other questions:
  • Which element is classified as a noble gas at STP?(1) hydrogen (3) neon(2) oxygen (4) nitrogen
    14·1 answer
  • What is the mass of 2 moles of carbon -12
    9·1 answer
  • A 45-g aluminium spoon(specific heat 0.80 / J/gdegree Celsius) at 24 degree celsius is placed in 180 ml(180 grams) of coffee at
    7·1 answer
  • How many formula units make up 16.4 g of magnesium chloride (MgCl2)?
    12·2 answers
  • How many of the following postulates of Dalton's atomic theory are still scientifically accepted? I. All atoms of the same eleme
    7·1 answer
  • A mole of cars stacked end to end would stretch back and forth across the United States how many times? Measured length of 1 car
    11·1 answer
  • How many moles of aluminum are equivalent to 4.816 × 1024 atoms?
    5·2 answers
  • Plants absorb ______ from the atmosphere and release _______ to the atmosphere.
    7·1 answer
  • 1. Which phase change is accompanied by the release of heat? A) H20(s)--> H2O(g) B) H20(l) ->H2O(s) C) H20(l)→ H2O(g) D) H
    12·1 answer
  • Acetylene gas (ethyne; HC = CH) burns in an oxyacetylene torch to produce carbon dioxide and water vapor. The heat of reaction f
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!